US20110214528A1 - Flywheel Assembly - Google Patents
Flywheel Assembly Download PDFInfo
- Publication number
- US20110214528A1 US20110214528A1 US13/057,783 US200913057783A US2011214528A1 US 20110214528 A1 US20110214528 A1 US 20110214528A1 US 200913057783 A US200913057783 A US 200913057783A US 2011214528 A1 US2011214528 A1 US 2011214528A1
- Authority
- US
- United States
- Prior art keywords
- flywheel
- assembly
- inner body
- housing
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/04—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow radial displacement, e.g. Oldham couplings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/14—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions combined with a friction coupling for damping vibration or absorbing shock
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/315—Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/315—Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
- F16F15/3153—Securing inertia members to the shafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2121—Flywheel, motion smoothing-type
- Y10T74/2132—Structural detail, e.g., fiber, held by magnet, etc.
Definitions
- the present invention relates to a flywheel assembly and more particularly to reduction of the loads experienced during failure of a high speed flywheel.
- weight of a flywheel assembly it is desirable for the weight of a flywheel assembly to be minimised. This generally makes the assembly easier to transport. More particularly, in mobile applications such as use in vehicles, weight reduction becomes particularly beneficial.
- the assembly does though need to be sufficiently robust to withstand loads generated during failure of a flywheel rotating at high speed.
- the present invention provides a flywheel assembly comprising a housing, a flywheel rotatably mounted in the housing and having an inner and an outer circumferential surface, and an inner body spaced radially and inwardly from the inner is circumferential surface of the flywheel, wherein the flywheel rotates in use around and relative to the inner body, the assembly defines an engagement surface spaced radially and outwardly from the outer circumferential surface of the flywheel, and the inner body is flexibly coupled to the housing, such that if the flywheel mounting fails during rotation at speed leading to displacement of the flywheel, flexure of the coupling as a result of forces exerted on the inner body by the displaced flywheel allows the flywheel to contact the engagement surface.
- the flywheel may form the rotor of a motor whilst the inner body forms its stator.
- the flexible coupling between the inner body and the housing comprises flexible polymeric material.
- the flexibility may be provided by an arrangement of one or more springs.
- FIG. 1 is a cut-away perspective view of a flywheel assembly
- FIG. 2 is a diagram representing a transverse cross-sectional view of a flywheel assembly embodying the invention
- FIG. 3 is a cross-sectional view of a flexible stator mounting according to one embodiment of the invention.
- FIG. 4 is a perspective view of a flexible stator mounting according to another embodiment of the invention.
- FIG. 5 is a graph plotting radial force and precession frequency against time during a flywheel failure.
- the flywheel assembly shown in FIG. 1 comprises a rotor 1 formed of magnetically loaded composite material.
- the rotor has an inner and an outer section ( 1 a and 1 b , respectively).
- the inner section comprises glass fibres and magnetic particles whilst the outer comprises carbon filaments.
- the two sections are bonded together.
- the rotor 1 is rigidly connected to a composite end cap 2 .
- the end cap is mounted on a shaft 3 , which is located on ceramic bearings 4 .
- the bearings are supported by a housing or containment 5 . This includes a back plate 5 a and a cylindrical drum 5 b .
- the inner section la of the rotor forms the permanent magnet component of a motor.
- the motor also includes a stator 6 mounted on the housing via a stator mount 7 .
- the stator provides the electrical power to drive and brake the flywheel.
- the rotor runs within a vacuum chamber 8 , and the stator is oil-cooled by oil circulating via chamber 9 defined by the stator can 10 .
- the flywheel has two primary failure modes. One is “burst failure”, where the composite outer section of the rotor fails. The other is “intact rotor failure”, where the composite outer section of the rotor remains intact, but either the bearings 4 fail or the composite end cap 2 fails. In the latter case, the rotor spins at high velocity without being constrained by the shaft 3 . The resulting vibration loads transmitted to the flywheel mountings can be substantial. The present invention seeks to considerably reduce these loads.
- stator mount 7 is a rigid structure rigidly mounted on the housing.
- the stator is flexibly coupled to the assembly housing.
- the rotor is displaced from it normal location relative to the housing, and contacts the outside diameter of the internally mounted stator. Friction between these two components causes the rotor to start a precession motion around the stator.
- the force generated by the rotor's precession also increases, causing the rotor bore and the stator's casing to wear away, increasing the radial clearance.
- Mounting the stator on suitably designed flexible mountings allows the rotor to move over radially such that the outer diameter of the rotor contacts the inside of the housing.
- Friction generated between the rotor and the housing generates a precession motion in the opposite direction to the motion caused by contact with the stator, thereby suppressing an increase in the precession frequency. This reduces the radial force that is generated during the failure.
- the magnitude of the forces generated are governed by the stiffness of the flexible mounting, the initial clearance between the outside diameter of the rotor and the bore of the housing, and the initial clearance between the outside diameter of the stator and the bore of the rotor.
- the lower the stiffness of the mounting the lower the precession frequency and hence the lower the forces.
- the stiffness has to be selected such that the natural frequency of the stator mountings does not influence the normal operation of the flywheel energy storage system. To this end, suitable radial damping may be incorporated into the design of the mounting.
- FIG. 2 shows a cross-sectional view of a flywheel assembly in which an intact rotor s failure has occurred.
- this results in anti-clockwise precession of the point of contact 22 between the rotor and the stator 24 , and a clockwise precession 28 of the point of contact 26 between the rotor and the surrounding housing 30 .
- FIG. 3 shows an implementation of a flexible stator mount 32 using moulded polymer mounts.
- the stator 24 is located on a cylindrical support 34 .
- the support 34 is coupled to a rigid hub 36 via rubber mountings 38 .
- the mountings 38 may be cast in PDMS (or another flexible material compatible with the oil used to cool the stator, such as silicon oil), and are bonded to an outer circumferential surface of the hub 36 and an inner circumferential surface of the support 34 .
- the rubber mountings are 10 mm thick in the radial direction and 20 mm wide in the longitudinal direction. Such an arrangement may produce a radial stiffness of 2500 N/mm with a radial movement of 5 mm.
- Holes 40 are provided in a flange 42 at one end of the hub 36 for fixing the hub to the back plate of the flywheel housing.
- the back plate may be profiled to engage with the inner diameter 44 of the hub to assist its location and retention on the back plate.
- a retaining collar 46 is held on the outer circumferential surface of the hub by grub screws, at the end of the hub opposite to the flange 42 .
- FIG. 4 depicts an alternative flexible stator mount 50 using a homogenous steel construction in which curved leaf spring elements 52 form the flexible mountings.
- An inner cylindrical hub element 56 is mounted rigidly onto the flywheel housing.
- the stator (not shown) is located on the outer circumferential surface of support element 54 .
- the spring elements 52 extend between the hub and support elements.
- FIG. 5 is a graph representing the behaviour of a flywheel assembly embodying the invention during an intact rotor failure. It can be seen that the sudden radial force increase associated with the rotor failure is rapidly decreased, as is the associated precession frequency.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A flywheel assembly is provided which comprises a housing, a flywheel rotatably mounted in the housing and defining an inner and an outer circumferential surface, and an inner body spaced radially and inwardly from the inner circumferential surface of the flywheel. The flywheel rotates in use around and relative to the inner body, the assembly defines an engagement surface spaced radially and outwardly from the outer circumferential surface of the flywheel, and the inner body is flexibly coupled to the housing. If the flywheel mounting fails during rotation at speed leading to displacement of the flywheel, flexure of the coupling as a result of forces exerted on the inner body by the displaced flywheel allows the flywheel to contact the engagement surface.
Description
- The present invention relates to a flywheel assembly and more particularly to reduction of the loads experienced during failure of a high speed flywheel.
- It is desirable for the weight of a flywheel assembly to be minimised. This generally makes the assembly easier to transport. More particularly, in mobile applications such as use in vehicles, weight reduction becomes particularly beneficial. The assembly does though need to be sufficiently robust to withstand loads generated during failure of a flywheel rotating at high speed.
- The present invention provides a flywheel assembly comprising a housing, a flywheel rotatably mounted in the housing and having an inner and an outer circumferential surface, and an inner body spaced radially and inwardly from the inner is circumferential surface of the flywheel, wherein the flywheel rotates in use around and relative to the inner body, the assembly defines an engagement surface spaced radially and outwardly from the outer circumferential surface of the flywheel, and the inner body is flexibly coupled to the housing, such that if the flywheel mounting fails during rotation at speed leading to displacement of the flywheel, flexure of the coupling as a result of forces exerted on the inner body by the displaced flywheel allows the flywheel to contact the engagement surface.
- Allowing the flywheel to come into contact with both inner and outer surfaces considerably reduces the loads generated by flywheel failure.
- In some embodiments, the flywheel may form the rotor of a motor whilst the inner body forms its stator.
- Preferably, the flexible coupling between the inner body and the housing comprises flexible polymeric material. Alternatively, the flexibility may be provided by an arrangement of one or more springs.
- Embodiments of the invention will now be described by way of example and with reference to the accompanying schematic drawings wherein:
-
FIG. 1 is a cut-away perspective view of a flywheel assembly; -
FIG. 2 is a diagram representing a transverse cross-sectional view of a flywheel assembly embodying the invention; -
FIG. 3 is a cross-sectional view of a flexible stator mounting according to one embodiment of the invention. -
FIG. 4 is a perspective view of a flexible stator mounting according to another embodiment of the invention; and isFIG. 5 is a graph plotting radial force and precession frequency against time during a flywheel failure. - The flywheel assembly shown in
FIG. 1 comprises arotor 1 formed of magnetically loaded composite material. The rotor has an inner and an outer section (1 a and 1 b, respectively). The inner section comprises glass fibres and magnetic particles whilst the outer comprises carbon filaments. The two sections are bonded together. - The
rotor 1 is rigidly connected to acomposite end cap 2. The end cap is mounted on a shaft 3, which is located on ceramic bearings 4. The bearings are supported by a housing or containment 5. This includes aback plate 5 a and acylindrical drum 5 b. - The inner section la of the rotor forms the permanent magnet component of a motor. The motor also includes a
stator 6 mounted on the housing via a stator mount 7. The stator provides the electrical power to drive and brake the flywheel. The rotor runs within a vacuum chamber 8, and the stator is oil-cooled by oil circulating viachamber 9 defined by the stator can 10. - The flywheel has two primary failure modes. One is “burst failure”, where the composite outer section of the rotor fails. The other is “intact rotor failure”, where the composite outer section of the rotor remains intact, but either the bearings 4 fail or the
composite end cap 2 fails. In the latter case, the rotor spins at high velocity without being constrained by the shaft 3. The resulting vibration loads transmitted to the flywheel mountings can be substantial. The present invention seeks to considerably reduce these loads. - In the flywheel assembly depicted in
FIG. 1 , stator mount 7 is a rigid structure rigidly mounted on the housing. In flywheel assemblies embodying the invention, the stator is flexibly coupled to the assembly housing. During an intact rotor failure, the rotor is displaced from it normal location relative to the housing, and contacts the outside diameter of the internally mounted stator. Friction between these two components causes the rotor to start a precession motion around the stator. As the is precession frequency increases, the force generated by the rotor's precession also increases, causing the rotor bore and the stator's casing to wear away, increasing the radial clearance. Mounting the stator on suitably designed flexible mountings allows the rotor to move over radially such that the outer diameter of the rotor contacts the inside of the housing. - Friction generated between the rotor and the housing generates a precession motion in the opposite direction to the motion caused by contact with the stator, thereby suppressing an increase in the precession frequency. This reduces the radial force that is generated during the failure.
- The magnitude of the forces generated are governed by the stiffness of the flexible mounting, the initial clearance between the outside diameter of the rotor and the bore of the housing, and the initial clearance between the outside diameter of the stator and the bore of the rotor. The lower the stiffness of the mounting, the lower the precession frequency and hence the lower the forces. The stiffness has to be selected such that the natural frequency of the stator mountings does not influence the normal operation of the flywheel energy storage system. To this end, suitable radial damping may be incorporated into the design of the mounting.
-
FIG. 2 shows a cross-sectional view of a flywheel assembly in which an intact rotor s failure has occurred. With therotor 20 rotating anti-clockwise, this results in anti-clockwise precession of the point ofcontact 22 between the rotor and thestator 24, and aclockwise precession 28 of the point ofcontact 26 between the rotor and the surroundinghousing 30. - to
FIG. 3 shows an implementation of aflexible stator mount 32 using moulded polymer mounts. - The
stator 24 is located on a cylindrical support 34. The support 34 is coupled to arigid hub 36 viarubber mountings 38. - The
mountings 38 may be cast in PDMS (or another flexible material compatible with the oil used to cool the stator, such as silicon oil), and are bonded to an outer circumferential surface of thehub 36 and an inner circumferential surface of the support 34. - In one embodiment, the rubber mountings are 10 mm thick in the radial direction and 20 mm wide in the longitudinal direction. Such an arrangement may produce a radial stiffness of 2500 N/mm with a radial movement of 5 mm.
-
Holes 40 are provided in a flange 42 at one end of thehub 36 for fixing the hub to the back plate of the flywheel housing. - The back plate may be profiled to engage with the
inner diameter 44 of the hub to assist its location and retention on the back plate. Aretaining collar 46 is held on the outer circumferential surface of the hub by grub screws, at the end of the hub opposite to the flange 42. -
FIG. 4 depicts an alternativeflexible stator mount 50 using a homogenous steel construction in which curvedleaf spring elements 52 form the flexible mountings. An inner cylindrical hub element 56 is mounted rigidly onto the flywheel housing. The stator (not shown) is located on the outer circumferential surface ofsupport element 54. Thespring elements 52 extend between the hub and support elements. -
FIG. 5 is a graph representing the behaviour of a flywheel assembly embodying the invention during an intact rotor failure. It can be seen that the sudden radial force increase associated with the rotor failure is rapidly decreased, as is the associated precession frequency. - It will be appreciated that although embodiments of the invention are described above which include a motor rotor and stator, the approaches described are also applicable to flywheels having a drive system (either mechanical or electrical) mounted externally, is with a shaft driving the flywheel. In this case, the stator may be replaced by a rigid element which would react to the failure loads in a similar way.
Claims (7)
1. A flywheel assembly comprising a housing, a flywheel rotatably mounted in the housing and defining an inner and an outer circumferential surface, and an inner body spaced radially and inwardly from the inner circumferential surface of the flywheel, wherein the flywheel rotates in use around and relative to the inner body, the assembly defines an engagement surface spaced radially and outwardly from the outer circumferential surface of the flywheel, and the inner body is flexibly coupled to the housing, such that if the flywheel mounting fails during rotation at speed leading to displacement of the flywheel, flexure of the coupling as a result of forces exerted on the inner body by the displaced flywheel allows the flywheel to contact the engagement surface.
2. An assembly of claim 1 , wherein the flexible coupling extends radially inwardly away from the inner body.
3. An assembly of claim 1 , wherein the flywheel provides the rotor of a motor whilst the inner body provides its stator.
4. An assembly of claim 3 , wherein the flexible coupling extends radially inwardly away from the stator.
5. An assembly of claim 1 , wherein the flexible coupling comprises flexible polymeric material.
6. An assembly of claim 1 , wherein the flexible coupling comprises an arrangement of one or more springs.
7. An assembly of claim 5 , wherein the flexible coupling between the inner body and the housing comprises an arrangement of one or more curved leaf springs.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0815067A GB2462671B (en) | 2008-08-18 | 2008-08-18 | Flywheel assembly with flexible coupling to enhance safety during flywheel failure |
GB0815067.4 | 2008-08-18 | ||
PCT/GB2009/051020 WO2010020806A1 (en) | 2008-08-18 | 2009-08-13 | Flywheel assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110214528A1 true US20110214528A1 (en) | 2011-09-08 |
US10069377B2 US10069377B2 (en) | 2018-09-04 |
Family
ID=39812207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/057,783 Active 2031-12-01 US10069377B2 (en) | 2008-08-18 | 2009-08-13 | Flywheel assembly |
Country Status (10)
Country | Link |
---|---|
US (1) | US10069377B2 (en) |
EP (1) | EP2313667B1 (en) |
JP (1) | JP5490121B2 (en) |
CN (1) | CN102124249B (en) |
DK (1) | DK2313667T3 (en) |
ES (1) | ES2422932T3 (en) |
GB (1) | GB2462671B (en) |
PL (1) | PL2313667T3 (en) |
PT (1) | PT2313667E (en) |
WO (1) | WO2010020806A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9108625B2 (en) | 2012-04-05 | 2015-08-18 | Denso Corporation | Power transmitting apparatus for vehicle |
US20170037932A1 (en) * | 2014-04-07 | 2017-02-09 | S4 Energy B.V. | A Flywheel System |
US10449864B2 (en) | 2014-04-15 | 2019-10-22 | Borgwarner Inc. | Motor/energy generator and energy storage device combination |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104067024B (en) * | 2012-03-15 | 2016-01-13 | 罗特尼克香港有限公司 | There is the dynamo-electric flywheel of safeguard construction |
GB2504217B (en) * | 2013-07-19 | 2016-09-14 | Gkn Hybrid Power Ltd | Flywheels for energy storage and methods of manufacture thereof |
GB2504218B (en) | 2013-07-19 | 2016-09-14 | Gkn Hybrid Power Ltd | Flywheels for energy storage and methods of manufacture thereof |
CN108506653A (en) * | 2018-03-30 | 2018-09-07 | 常州卡斯特铝精密铸造科技有限公司 | Bell housing |
Citations (14)
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US4244240A (en) * | 1976-12-17 | 1981-01-13 | The Johns Hopkins University | Elastic internal flywheel gimbal |
US4617484A (en) * | 1984-02-02 | 1986-10-14 | U.S. Philips Corporation | Electric motor with a torsionally flexible rotor mount |
US4647803A (en) * | 1983-12-28 | 1987-03-03 | Papst-Motoren Gmbh & Co. Kg | Electric motor, particularly a brushless direct current motor |
US4679761A (en) * | 1981-10-21 | 1987-07-14 | The Johns Hopkins University | Vibration dissipation mount for motors or the like |
US4783608A (en) * | 1986-06-27 | 1988-11-08 | Etudes Techniques Et Representations Industrielles E.T.R.I. | Electric motor with an improved bearing |
US5235227A (en) * | 1991-01-23 | 1993-08-10 | Panavision International L.P. | Noise and vibration dampened electric motor such as for use with a sound movie camera |
US5363003A (en) * | 1991-06-06 | 1994-11-08 | Nippon Densan Corporation | Motor and circuitry for protecting same |
US5760508A (en) * | 1993-07-06 | 1998-06-02 | British Nuclear Fuels Plc | Energy storage and conversion devices |
US20030061898A1 (en) * | 2001-09-13 | 2003-04-03 | Brackett Norman C. | Crash management system for implementation in flywheel systems |
US6809898B1 (en) * | 2000-01-13 | 2004-10-26 | Maxtor Corporation | Disk drive rocking mode vibration damper |
US6987336B2 (en) * | 2002-09-30 | 2006-01-17 | EBM—Papst Mulfingen GmbH & Co. KG | Electric motor with screwless plug-type mounting |
US20080143198A1 (en) * | 2006-12-18 | 2008-06-19 | Zhongshan Broad-Ocean Motor Co., Ltd. | Shock absorbing connector |
US7417345B2 (en) * | 2003-08-15 | 2008-08-26 | Delta Electronics, Inc. | Fan assembly with magnetic thrust bearings |
US7659644B2 (en) * | 2007-03-09 | 2010-02-09 | Asmo Co., Ltd. | Brushless motor and manufacturing method thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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SU131228A1 (en) | 1959-09-19 | 1959-11-30 | В.М. Андреев | Ornithopter wing |
SU1312281A1 (en) * | 1985-06-07 | 1987-05-23 | Донецкий Филиал Научно-Исследовательского Горнорудного Института | Method for accumulating energy |
BR9408005A (en) * | 1993-11-08 | 1996-12-03 | Rosen Motors Lp | Flywheel system for mobile energy storage |
GB2293281A (en) * | 1994-08-08 | 1996-03-20 | British Nuclear Fuels Plc | An energy storage and conversion apparatus |
GB2305992A (en) * | 1995-10-03 | 1997-04-23 | British Nuclear Fuels Plc | An energy storage apparatus with an energy absorbing structure that limits torque in the event of a failure |
-
2008
- 2008-08-18 GB GB0815067A patent/GB2462671B/en not_active Expired - Fee Related
-
2009
- 2009-08-13 ES ES09785487T patent/ES2422932T3/en active Active
- 2009-08-13 US US13/057,783 patent/US10069377B2/en active Active
- 2009-08-13 DK DK09785487.1T patent/DK2313667T3/en active
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- 2009-08-13 CN CN2009801324310A patent/CN102124249B/en active Active
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9108625B2 (en) | 2012-04-05 | 2015-08-18 | Denso Corporation | Power transmitting apparatus for vehicle |
US20170037932A1 (en) * | 2014-04-07 | 2017-02-09 | S4 Energy B.V. | A Flywheel System |
US10907701B2 (en) * | 2014-04-07 | 2021-02-02 | S4 Energy B.V. | Flywheel system |
US10449864B2 (en) | 2014-04-15 | 2019-10-22 | Borgwarner Inc. | Motor/energy generator and energy storage device combination |
Also Published As
Publication number | Publication date |
---|---|
WO2010020806A1 (en) | 2010-02-25 |
JP2012500617A (en) | 2012-01-05 |
PT2313667E (en) | 2013-06-03 |
CN102124249A (en) | 2011-07-13 |
PL2313667T3 (en) | 2013-08-30 |
JP5490121B2 (en) | 2014-05-14 |
GB2462671B (en) | 2010-12-15 |
CN102124249B (en) | 2013-03-06 |
GB0815067D0 (en) | 2008-09-24 |
ES2422932T3 (en) | 2013-09-16 |
US10069377B2 (en) | 2018-09-04 |
EP2313667B1 (en) | 2013-03-06 |
GB2462671A (en) | 2010-02-24 |
DK2313667T3 (en) | 2013-06-03 |
EP2313667A1 (en) | 2011-04-27 |
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